265216 has 44 divisors (see below), whose sum is σ = 622288. Its totient is φ = 110592.

The previous prime is 265207. The next prime is 265231. The reversal of 265216 is 612562.

It is an unprimeable number.

265216 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (3) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7150 + ... + 7186.

2²⁶⁵²¹⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 265216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (311144).

265216 is an abundant number, since it is smaller than the sum of its proper divisors (357072).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

265216 is an equidigital number, since it uses as much as digits as its factorization.

265216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64 (or 46 counting only the distinct ones).

The product of its digits is 720, while the sum is 22.

The square root of 265216 is about 514.9912620618. The cubic root of 265216 is about 64.2490297461.

Adding to 265216 its reverse (612562), we get a palindrome (877778).

The spelling of 265216 in words is "two hundred sixty-five thousand, two hundred sixteen".